夜霧 is read as よぎり (yogiri) and means night fog.
よぎり
yogiri
ようち
night attack
よざくら
cherry blossoms at night
やかいむすび
evening hairdo
よみや
festival-eve vigil
やろうじだい
throwing one's weight around without knowing one's limitations
よをひについで
day and night
よなぎ
evening calm
やかんさつえい
night photography
よぜめ
よるのまち
nightlife district
よろしく
best regards
ようちあさがけ
early-morning and late-night attacks